Electric Charge
2 marks · NormalA student rubs a balloon on their hair and the balloon sticks to a wall. Which statement best explains this?
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Correct option: The wall becomes positively charged and attracts the negatively charged balloon.
Common mistakes: Thinking both objects end up with the same charge; Believing protons move
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Marking points
B1 · 2 marks · Correct option selected
Worked solution
When the negatively charged balloon is brought close, it induces a positive charge on the wall's surface; thus, the wall becomes positively charged and attracts the balloon.